The shopkeeping tradition also extended into a third generation. While Gus was still very much involved with the business, his sons (Bobby and Dimitri, named for Gus' father) manage the day-to-day operations.

Photo: Alisa Scerrato/Hoodline

Update, 10:14am:

People around the city are paying tribute to Gus and his legacy:

“I am truly saddened by the death of Gus Vardakastanis, a beloved member of the Haight Ashbury community and owner of the Haight Street Market," said Supervisor London Breed.

My thoughts and prayers are with the family & employees of Gus, owner of Haight St. Market. Gus was loved and he will be truly missed. https://t.co/EL7ptSrTHn

“I am heartbroken at the loss of our beloved Gus Vardakastanis, a dedicated small business owner, immigrant entrepreneur and community leader. He provided healthy and affordable produce to the neighborhoods he served and employed many residents at his three local markets. His welcoming and entrepreneurial spirit will be missed by the many people he touched."

Anyone who has information about this incident is encouraged to contact SFPD via the department's anonymous tip line at 415-575-4444, or text TIP411 with "SFPD" at the start of the message.